Ok, so I'm on Cardassian Struggle, and after realising that I can get more Scorpions by replaying "The Vault" later, I've started to use them more.

However I also have Fleet support, and have noticed that They share a cool down, is there a particular reason for this, it doesn't seem like a particulary OP combo, it's only 3 scorpions that tend to die alot, but I find it quite frustrating.